26638683662 has 8 divisors (see below), whose sum is σ = 39961323336. Its totient is φ = 13318242552.

The previous prime is 26638683661. The next prime is 26638683683.

26638683662 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 26638683598 and 26638683607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26638683661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519008 + ... + 568019.

It is an arithmetic number, because the mean of its divisors is an integer number (4995165417).

Almost surely, 2^26638683662 is an apocalyptic number.

26638683662 is a deficient number, since it is larger than the sum of its proper divisors (13322639674).

26638683662 is a wasteful number, since it uses less digits than its factorization.

26638683662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099282.

The product of its digits is 17915904, while the sum is 56.

The spelling of 26638683662 in words is "twenty-six billion, six hundred thirty-eight million, six hundred eighty-three thousand, six hundred sixty-two".